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godot/scene/2d/collision_shape_2d.cpp
reduz 2580ca01e6 Ability to keep collisionshapes and collisionpolygons when running the game. 
Works for 2D and 3D
These are still just helpers in case you want to animate them or access them
directly.
Modifying the real shapes is still done via CollisionObject and CollisionObject2D APIs
But an API was added so you can query which shapes from CollisionObject correspond to which CollisionShape.

Have Fun!
2015-09-15 22:07:03 -03:00

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/*************************************************************************/
/* collision_shape_2d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2015 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "collision_shape_2d.h"
#include "collision_object_2d.h"
#include "scene/resources/segment_shape_2d.h"
#include "scene/resources/shape_line_2d.h"
#include "scene/resources/circle_shape_2d.h"
#include "scene/resources/rectangle_shape_2d.h"
#include "scene/resources/capsule_shape_2d.h"
#include "scene/resources/convex_polygon_shape_2d.h"
#include "scene/resources/concave_polygon_shape_2d.h"
void CollisionShape2D::_add_to_collision_object(Object *p_obj) {
if (unparenting)
return;
CollisionObject2D *co = p_obj->cast_to<CollisionObject2D>();
ERR_FAIL_COND(!co);
update_shape_index=co->get_shape_count();
co->add_shape(shape,get_transform());
if (trigger)
co->set_shape_as_trigger(co->get_shape_count()-1,true);
}
void CollisionShape2D::_shape_changed() {
update();
_update_parent();
}
void CollisionShape2D::_update_parent() {
Node *parent = get_parent();
if (!parent)
return;
CollisionObject2D *co = parent->cast_to<CollisionObject2D>();
if (!co)
return;
co->_update_shapes_from_children();
}
void CollisionShape2D::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_ENTER_TREE: {
unparenting=false;
can_update_body=get_tree()->is_editor_hint();
} break;
case NOTIFICATION_LOCAL_TRANSFORM_CHANGED: {
if (!is_inside_tree())
break;
if (can_update_body) {
_update_parent();
} else if (update_shape_index>=0){
CollisionObject2D *co = get_parent()->cast_to<CollisionObject2D>();
if (co) {
co->set_shape_transform(update_shape_index,get_transform());
}
}
} break;
case NOTIFICATION_EXIT_TREE: {
can_update_body=false;
} break;
/*
case NOTIFICATION_TRANSFORM_CHANGED: {
if (!is_inside_scene())
break;
_update_parent();
} break;*/
case NOTIFICATION_DRAW: {
if (!get_tree()->is_editor_hint())
return;
rect=Rect2();
Color draw_col=Color(0,0.6,0.7,0.5);
if (shape->cast_to<LineShape2D>()) {
LineShape2D *l = shape->cast_to<LineShape2D>();
Vector2 point = l->get_d() * l->get_normal();
Vector2 l1[2]={point-l->get_normal().tangent()*100,point+l->get_normal().tangent()*100};
draw_line(l1[0],l1[1],draw_col,3);
Vector2 l2[2]={point,point+l->get_normal()*30};
draw_line(l2[0],l2[1],draw_col,3);
rect.pos=l1[0];
rect.expand_to(l1[1]);
rect.expand_to(l2[0]);
rect.expand_to(l2[1]);
} else if (shape->cast_to<SegmentShape2D>()) {
SegmentShape2D *s = shape->cast_to<SegmentShape2D>();
draw_line(s->get_a(),s->get_b(),draw_col,3);
rect.pos=s->get_a();
rect.expand_to(s->get_b());
} else if (shape->cast_to<RayShape2D>()) {
RayShape2D *s = shape->cast_to<RayShape2D>();
Vector2 tip = Vector2(0,s->get_length());
draw_line(Vector2(),tip,draw_col,3);
Vector<Vector2> pts;
float tsize=4;
pts.push_back(tip+Vector2(0,tsize));
pts.push_back(tip+Vector2(0.707*tsize,0));
pts.push_back(tip+Vector2(-0.707*tsize,0));
Vector<Color> cols;
for(int i=0;i<3;i++)
cols.push_back(draw_col);
draw_primitive(pts,cols,Vector<Vector2>()); //small arrow
rect.pos=Vector2();
rect.expand_to(tip);
rect=rect.grow(0.707*tsize);
} else if (shape->cast_to<CircleShape2D>()) {
CircleShape2D *s = shape->cast_to<CircleShape2D>();
Vector<Vector2> points;
for(int i=0;i<24;i++) {
points.push_back(Vector2(Math::cos(i*Math_PI*2/24.0),Math::sin(i*Math_PI*2/24.0))*s->get_radius());
}
draw_colored_polygon(points,draw_col);
rect.pos=-Point2(s->get_radius(),s->get_radius());
rect.size=Point2(s->get_radius(),s->get_radius())*2.0;
} else if (shape->cast_to<RectangleShape2D>()) {
RectangleShape2D *s = shape->cast_to<RectangleShape2D>();
Vector2 he = s->get_extents();
rect=Rect2(-he,he*2.0);
draw_rect(rect,draw_col);;
} else if (shape->cast_to<CapsuleShape2D>()) {
CapsuleShape2D *s = shape->cast_to<CapsuleShape2D>();
Vector<Vector2> points;
for(int i=0;i<24;i++) {
Vector2 ofs = Vector2(0,(i>6 && i<=18) ? -s->get_height()*0.5 : s->get_height()*0.5);
points.push_back(Vector2(Math::sin(i*Math_PI*2/24.0),Math::cos(i*Math_PI*2/24.0))*s->get_radius() + ofs);
if (i==6 || i==18)
points.push_back(Vector2(Math::sin(i*Math_PI*2/24.0),Math::cos(i*Math_PI*2/24.0))*s->get_radius() - ofs);
}
draw_colored_polygon(points,draw_col);
Vector2 he=Point2(s->get_radius(),s->get_radius()+s->get_height()*0.5);
rect.pos=-he;
rect.size=he*2.0;
} else if (shape->cast_to<ConvexPolygonShape2D>()) {
ConvexPolygonShape2D *s = shape->cast_to<ConvexPolygonShape2D>();
Vector<Vector2> points = s->get_points();
for(int i=0;i<points.size();i++) {
if (i==0)
rect.pos=points[i];
else
rect.expand_to(points[i]);
}
draw_colored_polygon(points,draw_col);
}
rect=rect.grow(3);
} break;
case NOTIFICATION_UNPARENTED: {
unparenting = true;
_update_parent();
} break;
}
}
void CollisionShape2D::set_shape(const Ref<Shape2D>& p_shape) {
if (shape.is_valid())
shape->disconnect("changed",this,"_shape_changed");
shape=p_shape;
update();
if (is_inside_tree() && can_update_body)
_update_parent();
if (is_inside_tree() && !can_update_body && update_shape_index>=0) {
CollisionObject2D *co = get_parent()->cast_to<CollisionObject2D>();
if (co) {
co->set_shape(update_shape_index,p_shape);
}
}
if (shape.is_valid())
shape->connect("changed",this,"_shape_changed");
}
Ref<Shape2D> CollisionShape2D::get_shape() const {
return shape;
}
Rect2 CollisionShape2D::get_item_rect() const {
return rect;
}
void CollisionShape2D::set_trigger(bool p_trigger) {
trigger=p_trigger;
if (can_update_body) {
_update_parent();
} else if (is_inside_tree() && update_shape_index>=0){
CollisionObject2D *co = get_parent()->cast_to<CollisionObject2D>();
if (co) {
co->set_shape_as_trigger(update_shape_index,p_trigger);
}
}
}
bool CollisionShape2D::is_trigger() const{
return trigger;
}
void CollisionShape2D::_set_update_shape_index(int p_index) {
update_shape_index=p_index;
}
int CollisionShape2D::_get_update_shape_index() const{
return update_shape_index;
}
void CollisionShape2D::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_shape","shape"),&CollisionShape2D::set_shape);
ObjectTypeDB::bind_method(_MD("get_shape"),&CollisionShape2D::get_shape);
ObjectTypeDB::bind_method(_MD("_shape_changed"),&CollisionShape2D::_shape_changed);
ObjectTypeDB::bind_method(_MD("_add_to_collision_object"),&CollisionShape2D::_add_to_collision_object);
ObjectTypeDB::bind_method(_MD("set_trigger","enable"),&CollisionShape2D::set_trigger);
ObjectTypeDB::bind_method(_MD("is_trigger"),&CollisionShape2D::is_trigger);
ObjectTypeDB::bind_method(_MD("_set_update_shape_index","index"),&CollisionShape2D::_set_update_shape_index);
ObjectTypeDB::bind_method(_MD("_get_update_shape_index"),&CollisionShape2D::_get_update_shape_index);
ObjectTypeDB::bind_method(_MD("get_collision_object_shape_index"),&CollisionShape2D::get_collision_object_shape_index);
ADD_PROPERTYNZ(PropertyInfo(Variant::OBJECT,"shape",PROPERTY_HINT_RESOURCE_TYPE,"Shape2D"),_SCS("set_shape"),_SCS("get_shape"));
ADD_PROPERTY(PropertyInfo(Variant::BOOL,"trigger"),_SCS("set_trigger"),_SCS("is_trigger"));
ADD_PROPERTY( PropertyInfo( Variant::INT, "_update_shape_index", PROPERTY_HINT_NONE, "",PROPERTY_USAGE_NOEDITOR), _SCS("_set_update_shape_index"), _SCS("_get_update_shape_index"));
}
CollisionShape2D::CollisionShape2D() {
rect=Rect2(-Point2(10,10),Point2(20,20));
set_notify_local_transform(true);
trigger=false;
unparenting = false;
can_update_body = false;
update_shape_index=-1;
}
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